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## Using ASCII files directly
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We are in the process of removing the need for compiled binary files and allow the code work directly on the ASCII files. This work is still in progress, but some of the new functionality is already available. Starting with Cloudy version C17 you can use the command *table star "<yourname.ascii>" <par1> <par2> ...* to interpolate directly on the data in the ASCII file and skip the compilation stage. This works well for small grids (roughly 1 to 10 MB in size, depending on the speed of the computer). For large grids, we will likely introduce a new (and optional) form of compilation that is independent of the frequency mesh in Cloudy to help speed up the reading process.
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We are in the process of removing the need for compiled binary files and allow the code to work directly on the ASCII files. This work is still in progress, but some of the new functionality is already available. Starting with Cloudy version C17 you can use the command *table star "<yourname.ascii>" <par1> <par2> ...* to interpolate directly on the data in the ASCII file and skip the compilation stage. This works well for small grids (roughly 1 to 10 MB in size, depending on the speed of the computer). For large grids, we will likely introduce a new (and optional) form of compilation that is independent of the frequency mesh in Cloudy to help speed up the reading process.
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Starting with Cloudy C17 we also support the command *table star "<yourname.ascii>" list* to list the contents of an ASCII file. All other *table star* commands still require the use of compiled binary files.
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... | ... | @@ -269,7 +269,7 @@ The following subsections describe details of each of the standard grids now in |
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These are the Castelli & Kurucz
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([Castelli, F., Kurucz R. L. 2004, astro-ph/0405087](http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?bibcode=2004astro.ph..5087C&db_key=PRE&data_type=HTML&format=&high=456aed1c0813147)) LTE, plane-parallel, hydrostatic model atmospheres using the newest opacity distribution functions. The original versions of the files are from the [Kurucz web site](http://kurucz.harvard.edu/grids.html). These grids come in various metallicities, ranging from log Z = +0.5 to -2.5, all with a turbulent velocity of 2 km/s. There is also a single file atlas_3d_odfnew.ascii.gz which contains all metallicities and which enables interpolation in log Z. If you download the latter file, *you do not need any of the other odfnew files*, unless you want to run the entire test suite. *The ODFNEW models are the most up-to-date and preferred versions of the Atlas models.*
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([Castelli, F., Kurucz R. L. 2004, astro-ph/0405087](http://cdsads.u-strasbg.fr/cgi-bin/nph-bib_query?bibcode=2004astro.ph..5087C&db_key=PRE&data_type=HTML&format=&high=456aed1c0813147)) LTE, plane-parallel, hydrostatic model atmospheres using the newest opacity distribution functions. The original versions of the files are from the [Kurucz web site](http://kurucz.harvard.edu/grids.html). These grids come in various metallicities, ranging from log Z = +0.5 to -2.5, all with a turbulent velocity of 2 km/s. There is also a single file *atlas_3d_odfnew.ascii.gz* which contains all metallicities and which enables interpolation in log Z. If you download the latter file, *you do not need any of the other odfnew files*, unless you want to run the entire test suite. *The ODFNEW models are the most up-to-date and preferred versions of the Atlas models.*
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... | ... | @@ -317,7 +317,7 @@ These are the Castelli & Kurucz |
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[atlas_3d.ascii.gz (all metallicities)](https://data.nublado.org/stars/atlas_3d.ascii.gz)
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These are the final versions of the original Kurucz (Kurucz, R.L. 1991, in "Proceedings of the Conference on Precision Photometry: Astrophysics of the Galaxy", Eds. A.G.D. Philip, A.R. Upgren and K.A. Janes. Schenectady, NY: Davis Press, p. 27) LTE, plane-parallel, hydrostatic model atmospheres. The original versions of the files are from the [Kurucz web site](http://kurucz.harvard.edu/grids.html). These grids come in various metallicities, ranging from log Z = +1.0 to -5.0, all with a turbulent velocity of 2 km/s. There is also a single file atlas_3d.ascii.gz which contains all metallicities and which enables interpolation in log Z. If you download the latter file, *you do not need any of the other files*, unless you want to run the entire test suite. These models are included for backward compatibility and also because they cover a larger range of metallicities. The ODFNEW models further up are the most up-to-date and preferred versions of the Atlas models.
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These are the final versions of the original Kurucz (Kurucz, R.L. 1991, in "Proceedings of the Conference on Precision Photometry: Astrophysics of the Galaxy", Eds. A.G.D. Philip, A.R. Upgren and K.A. Janes. Schenectady, NY: Davis Press, p. 27) LTE, plane-parallel, hydrostatic model atmospheres. The original versions of the files are from the [Kurucz web site](http://kurucz.harvard.edu/grids.html). These grids come in various metallicities, ranging from log Z = +1.0 to -5.0, all with a turbulent velocity of 2 km/s. There is also a single file *atlas_3d.ascii.gz* which contains all metallicities and which enables interpolation in log Z. If you download the latter file, *you do not need any of the other files*, unless you want to run the entire test suite. These models are included for backward compatibility and also because they cover a larger range of metallicities. The ODFNEW models further up are the most up-to-date and preferred versions of the Atlas models.
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## Tlusty O and B star grids
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[Tlusty SEDs for Cloudy](http://tlusty.oca.eu/Tlusty2002/tlusty-frames-cloudy.html)
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The [Tlusty](http://tlusty.oca.eu/) code is maintained by Ivan Hubeny & Thierry Lanz. They have produced extensive grids of non-LTE, line-blanketed, plane-parallel, hydrostatic O and B star SEDs. The [_SEDs for Cloudy_](http://tlusty.oca.eu/Tlusty2002/tlusty-frames-cloudy.html) link on their main web site gives links to the files we use.
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The [Tlusty](http://tlusty.oca.eu/) code is maintained by Ivan Hubeny & Thierry Lanz. They have produced extensive grids of non-LTE, line-blanketed, plane-parallel, hydrostatic O, and B star SEDs. The [_SEDs for Cloudy_](http://tlusty.oca.eu/Tlusty2002/tlusty-frames-cloudy.html) link on their main web site gives links to the files we use.
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There are 11 sets of O star SEDs compiled from the [OSTAR2002 grid](http://tlusty.oca.eu/Tlusty2002/tlusty-frames-OS02.html) with names "ostar2002_*.ascii.gz". They are described in the reference [Lanz, T., & Hubeny, I. 2003, ApJS, 146, 417](http://adsabs.harvard.edu/cgi-bin/nph-bib_query?2003ApJS..146..417L&db_key=AST). These SEDs are used by the *stars_ostar2002\*.in* simulations in the test suite.
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